Up to 4 days: Usually nicotine or cotinine may be detectable up to 4 days post last smoking. Longer, up to about 10 days, in blood samples. Can have false positive if exposure to exposure to heavy second hand smoke
Answered 9/9/2020
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Cotinine test: Are you asking us how to cheat the test? Providers usually look to lab tests to help get a handle on a person's health, not to be tricked.
Answered 9/14/2020
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